Product name: Automatic ultrasonic bark stopper Product size: 164mm(L)*110mm(W)*60mm(H) Product weight: about 195G Product material: ABS Battery specifications: 9V alkaline dry battery Applicable environment: indoor environment How it works: The ultrasonic bark stopper automatically monitors the dog's bark in real time. Once the dog's bark is detected, it automatically releases ultrasound to stop the dog's nuisance barking and correct the dog's uncivilized barking behavior. After continuous use for a period of time, the dog will form a conditioned reflex that "barking brings discomfort to it" and gradually develop a good habit of not barking. Suitable for: single dog family Note: After opening, the sound source should be avoided. Avoid interference with the normal operation of the device. If the TV, stereo, etc. In addition, try to avoid obstructions. In order to avoid obstruction of sound transmission. Product Attributes: Battery Contains Material: plastic, other